17704Re: primes of the form q^2-q+1...
- Feb 28, 2006Hello Max,
Some simple partial results:
Let q=2^p-1; a=q²-q+1 then
q=0 mod 3, if p is even
q=1 mod 3, if p is odd (e.g. prime)
in any case a=1 mod 3
a is not divisible by 2,3,5; the more amazing that a=prime does not
a cannot be factorized within the real numbers such as e.g.
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